Power Requirements For Ex8208 Switch Components; Table 46: Power Specifications For A 2000 W Dc Power Supply Used In An Ex8208 Switch; Table 47: Ex8208 Switch Component Power Requirements - Juniper EX8208 Complete Hardware Manual

Table 46: Power Specifications for a 2000 W DC Power Supply Used in an EX8208 Switch

Item
DC input voltage
DC input current rating
Output power
Internal Fuse Protection
Related
Documentation

Power Requirements for EX8208 Switch Components

Table 47: EX8208 Switch Component Power Requirements

Components
Fan tray
Switch Fabric and Routing Engine (SRE) module
Switch Fabric (SF) module
8-port SFP+ line card (including optical transceivers)
40-port SFP+ line card (including optical transceivers)
48-port SFP line card (including optical transceivers)
48-port RJ-45 line card
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Documentation
Copyright © 2010, Juniper Networks, Inc.
Specifications
Minimum operating voltage: –40 VDC
Nominal operating voltage: –48 VDC
Operating voltage range: –40 VDC through –72 VDC
NOTE: If the input voltage from the DC power source drops below –37.5 VDC through –39.5
VDC, the switching platform automatically shuts down. During automatic shutdown, the
circuit remains active. When the input voltage returns to –43 VDC through –44 VDC, the
switch automatically starts up again and the system returns to normal operation within 30
minutes. No operator intervention is required.
50 A maximum at nominal operating voltage (–48 VDC) for each input terminal.
2000 W
100 A
DC Power Supply in an EX8200 Switch on page 49
DC Power Supply LEDs in an EX8200 Switch on page 51
Table 47 on page 105 lists the power requirements for different hardware components of
an EX8208 switch under typical voltage conditions.
AC Power Supply in an EX8200 Switch on page 41
DC Power Supply in an EX8200 Switch on page 49
Chapter 7: Planning Power Requirements
Power Requirements (Watts)
300 W (at normal fan speed)
1100 W (at maximum fan speed)
200 W
100 W
450 W
550 W
330 W
350 W
105